Anyone else having this problem. Car only has 48000 miles on it. It's burning around 1qt per 1000 miles. After doing some internet searches it seems to be the DOD or AVF. Does anyone know of a programmer that can eliminate the DOD and just keep it in 8cyl. mode. Thanks.

Agreed, but to car manufacturer standards, it's normal. Make sure you use the recommended proper oil that meets the GM-6094M motor oil standard. Check the PCV valve to be sure it is not gummed up/stuck, from using petroleum based oils, as a stuck PCV valve can over-pressurize the oil crankcase forcing oil up into the combustion chambers where it is burned and sent out the tailpipe. When you hold the PCV valve and shake it, it should make a very distinct rattling noise if it's not plugged. Again, look for oil leaks. A good performing synthetic oil can greatly reduce oil consumption as well.

I do a lot of highway miles and thought the cost of engine longevity was more important than MPG. I didnt see a difference in MPG with the DoD off. I might not be the best one to answer. Along with tune I did a full tune up and went from 87 octane to 91

Not quite sure either, but from what I've read it's only DOD engines with this issue. Something with oil gathering in cylinders once DOD is activated . Once DOD is disabled oil consumption goes away.

That may be true, but GM (and other manufacturers) have this issue with non DOD engines as well. ie. Northstar. Ironically, my 4.6 N* burns about 1/2 quart every 1500 miles, yet my SS 5.3 DOD burns absolutely nothing. And I drive the SS a lot harder. Dino in the N*, Mobil1 in the SS - does that make a difference? Who knows......... What type of oil do you use Jeckyl?

Oil gathering in the cylinders doesn't explain it either, that oil would still get there with or without the DOD, it would just burn right away rather than waiting for the cylinder to reactivate. I'm not sure dino vs synthetic makes sense either, but what weight of oil is being used?